Investigation Hotline specializes in lie detection through skilled investigative interviews. We also offer polygraph testing, but here’s why our investigators often get better results than machines.
Why Human Lie Detection Works Better
Polygraph machines track physiological responses—heart rate, blood pressure, respiration. But they miss what experienced investigators catch: verbal cues, speech patterns, linguistic choices, emotional tells, hesitation, and deflection.
A polygraph can be beaten. Countermeasures exist. The machine only measures physical stress, not deception itself.
Our investigators analyze:
- Automatic verbal responses that reveal truth before someone has time to construct a lie
- Speech pattern changes when someone moves from truthful to fabricated details
- Linguistic markers like pronoun usage, tense shifts, and unnecessary details
- Hesitation timing that indicates cognitive effort to maintain a false story
- Deflection tactics when subjects avoid direct answers
- Emotional inconsistency between claimed feelings and actual presentation
When Lie Detection Interviews Are Essential
- Infidelity investigations where you need multiple conversations as the story evolves
- Employee misconduct when subjects refuse polygraph or you need ongoing assessment
- Witness verification in missing persons cases where accounts don’t align
- Partnership disputes requiring repeated questioning as new information surfaces
- Custody cases involving complex allegations that need careful examination over time
When Polygraph Still Has Uses
Polygraph testing works for:
- Pre-employment screening where baseline physiological data is useful
- One-time verification when you need a single session result
- Legal documentation where physiological data supplements other evidence
But understand its limitations. Experienced liars pass polygraphs. Nervous truth-tellers fail them.
The Investigation Hotline Difference
We’ve been conducting interviews since 1995. Our investigators are trained to read what machines can’t: the full human response. Verbal patterns, emotional congruence, behavioral consistency across multiple conversations.
That’s more accurate than tracking someone’s pulse.
Not sure which approach you need? Call for a confidential consultation.
+1 416-205-9114 | Available across Toronto, Mississauga, Brampton, Vaughan, and the GTA.
To learn more, contact Investigation Hotline at +1 416-205-9114 or Speak with the Experts Now
